S32 SDK
FLEXIO I2C

Example application showing FlexIO I2C driver usage

Application description


The purpose of this demo application is to show you the usage of the FlexIO I2C driver found on the S32K148 SoC using S32 SDK API.

The application uses FlexIO I2C driver to make a send and a receive data request. The slave device for this example is the LPI2C instance, which is configured to act as a bus slave. The slave and master buffers will be checked after each transfer by the application, user shall check isTransferOk variable to see if the transmissions are successful.

Prerequisites


The run the example you will need to have the following items:

  • 1 S32K148 board
  • 1 Power Adapter 12V (if the board can't be powered from the USB)
  • 2 Dupont male to male cable
  • 1 Personal Computer
  • 1 Jlink Lite Debugger (optional, users can use Open SDA)

Boards supported


The following boards are supported by this application:

  • S32K148EVB-Q100
  • S32K148-MB

Hardware Wiring


The following connections must be done to for this example application to work:

PIN FUNCTION S32K148EVB-Q100 S32K148-MB
FLEXIO SDA (PTD0) J1.1 - J6.1 J9.29 - J12.31
FLEXIO SCL (PTA11) J1.3 - J1.2 J9.30 - J9.22
LPI2C SDA (PTA2) J1.1 - J6.1 J9.29 - J12.31
LPI2C SCL (PTA3) J1.3 - J1.2 J9.30 - J9.22

How to run


1. Importing the project into the workspace

After opening S32 Design Studio, go to File -> New S32DS Project From... and select flexio_i2c_s32k148. Then click on Finish.
The project should now be copied into you current workspace.

2. Generating the Processor Expert configuration

First go to Project Explorer View in S32 DS and select the current project(flexio_i2c_s32k148). Then go to Project and click on Generate Processor Expert Code
Wait for the code generation to be completed before continuing to the next step.

3. Building the project

Select the configuration to be built FLASH (Debug_FLASH) or RAM (Debug_RAM) by left clicking on the downward arrow corresponding to the build button(. Wait for the build action to be completed before continuing to the next step.

4. Debugging the project

Go to Run and select Debug Configurations. There will be four debug configurations for this project:

Configuration Name Description
flexio_i2c_s32k148 Debug_RAM Jlink Debug the RAM configuration using Segger Jlink debuggers
flexio_i2c_s32k148 Debug_FLASH Jlink Debug the FLASH configuration using Segger Jlink debuggers
flexio_i2c_s32k148 Debug_RAM PEMicro Debug the RAM configuration using PEMicro debuggers
flexio_i2c_s32k148 Debug_FLASH PEMicro Debug the FLASH configuration using PEMicro debuggers


Select the desired debug configuration and click on Launch. Now the perspective will change to the Debug Perspective.
Use the controls to control the program flow.

Note
For more detailed information related to S32 Design Studio usage please consult the available documentation.